Fix indentation inconsistencies

Use 2-space indents everywhere and fix up non-conforming code with
ESLint's --fix tool.

.eslintrc

@@ -20,6 +20,7 @@
     "dot-notation": "error",
     "eqeqeq": "error",
     "guard-for-in": "error",
+    "indent": ["error", 2],
     "no-caller": "error",
     "no-case-declarations": "error",
     "no-console": [

gulpfile.js

@@ -69,7 +69,7 @@ function getEnv(key) {
 var vendorModules = Object.keys(vendorBundles.bundles)
   .reduce(function (deps, key) {
     return deps.concat(vendorBundles.bundles[key]);
-}, []);
+  }, []);
 
 // Builds the bundles containing vendor JS code
 gulp.task('build-vendor-js', function () {
@@ -319,8 +319,7 @@ gulp.task('test-watch-app', function (callback) {
   runKarma('./h/static/scripts/karma.config.js', {}, callback);
 });
 
-gulp.task('upload-sourcemaps',
-          ['build-app-js'], function () {
+gulp.task('upload-sourcemaps', ['build-app-js'], function () {
   var uploadToSentry = require('./scripts/gulp/upload-to-sentry');
 
   var opts = {

h/static/scripts/util/observable.js

@@ -14,7 +14,7 @@ var Observable = require('zen-observable');
   * @param {EventTarget} src - The event source.
   * @param {Array<string>} eventNames - List of events to subscribe to
   */
- function listen(src, eventNames) {
+function listen(src, eventNames) {
   return new Observable(function (observer) {
     var onNext = function (event) {
       observer.next(event);
@@ -30,7 +30,7 @@ var Observable = require('zen-observable');
       });
     };
   });
- }
+}
 
 /**
  * Delay events from a source Observable by `delay` ms.
@@ -62,7 +62,7 @@ function delay(delay, src) {
   * @param {Observable<T>} src
   * @return {Observable<T>}
   */
- function buffer(delay, src) {
+function buffer(delay, src) {
   return new Observable(function (obs) {
     var lastValue;
     var timeout;
@@ -84,7 +84,7 @@ function delay(delay, src) {
       clearTimeout(timeout);
     };
   });
- }
+}
 
  /**
   * Merges multiple streams of values into a single stream.
@@ -92,7 +92,7 @@ function delay(delay, src) {
   * @param {Array<Observable>} sources
   * @return Observable
   */
- function merge(sources) {
+function merge(sources) {
   return new Observable(function (obs) {
     var subs = sources.map(function (src) {
       return src.subscribe({
@@ -108,7 +108,7 @@ function delay(delay, src) {
       });
     };
   });
- }
+}
 
 /** Drop the first `n` events from the `src` Observable. */
 function drop(src, n) {